Welding Tips and Tricks

I'm going to be testing on Hastalloy C276 soon and would like any advice, tricks and tips to welding this metal. Its going to be a pipe test 6g on a sch 80 2". I have been welding for nine years and have mastered Stainless, carbon steel, cast iron and have a lil experience with aluminum. Any advice and help would be greatly appreciated!

bulldogchandler62 wrote:I'm going to be testing on Hastalloy C276 soon and would like any advice, tricks and tips to welding this metal. Its going to be a pipe test 6g on a sch 80 2". I have been welding for nine years and have mastered Stainless, carbon steel, cast iron and have a lil experience with aluminum. Any advice and help would be greatly appreciated!

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BDC62.

At the bottom of the second page of the attached link has a few basic suggestions concerning Hastalloy C276.
http://www.haynesintl.com/pdf/hw2031.pdf

On page 3 of the attached link there are also welding recommendation for Hastalloy alloys in general:
http://www.haynesintl.com/pdf/h2010.pdf

For some background data on the alloy:
http://www.haynesintl.com/hastelloyc276 ... lloypf.htm
http://www1.diccism.unipi.it/De_Sanctis ... 0alloy.pdf

Hope the info helps a little.
Alexa

Not much different to the welder than stainless. Just watch your interpass temperature. Usually around 250 degrees. If it gets to warm you'll start getting color( gold, dull brown, etc). Puddle gets hard to work with when to hot just like the other nickel alloys. Carry a spray bottle of water to keep your coupon cool it won't hurt it a bit. If its a carbon coupon the hastelloy won't favor the carbon on the upper toe line of the cap. Can't tell you why it just doesn't. Maybe thermal conductivity or some other science lol. Good luck!

Vince

Thanks guys this info really helped me out, it didn't take very much heat at all to weld this stuff. 65 amps was a bit on the hot side I dropped down to around 50-55 amps and it welded perfect... This is on a 1" coupon. And I'm blowing a hard purge as well(as hard as I could go without blowing out my root pass)... Again thank you and any other info would be greatly appreciated!!